Home / 8,912.64-12,300.73-5,135.08

Finding the Fourth Proportional to 8,912.64, 12,300.73 and 5,135.08

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Solution

The fourth proportional to 8,912.64, 12,300.73 and 5,135.08 is: 7,087.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.64 : 12,300.73 = 5,135.08 : x
  2. Step 2: Convert to fraction form
    8,912.64/12,300.73 = 5,135.08/x
  3. Step 3: Cross multiply
    8,912.64x = 12,300.73 × 5,135.08
  4. Step 4: Simplify right side
    8,912.64x = 63,165,212.08
  5. Step 5: Solve for x
    x = 63,165,212.08/8,912.64
  6. Step 6: Final answer
    x = 7,087.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.